Method and arrangement for monitoring an administration of at least one medication

• US 20080077080A1
• Filed: 09/24/2007
• Published: 03/27/2008
• Est. Priority Date: 09/23/2006
• Status: Active Grant

• Current Assignee: Dragerwerk AG & Company KGaA (FPS Vermögensverwaltung GmbH)
• Original Assignee: Draeger Medical Systems Incorporated (Dragerwerk AG)
• Inventors: Kullik, Gotz, Hengstenberg, Andreas
• Granted Patent: US 7,811,247 B2
• Time in Patent Office: Days
• US Class Current: 604/66
• CPC Class Codes: A61B 5/369 Electroencephalography [EEG] devices for psychotechnics A61B5/16
• CPC Class Codes: A61B 5/4821 Determining level or depth of anaesthesia A61B5/1106 takes precedence
• CPC Class Codes: A61M 16/01 specially adapted for anaesthetising A61M16/104, A61M16/18 take precedence
• CPC Class Codes: A61M 16/107 in the inspiratory path
• CPC Class Codes: A61M 2230/437 the anaesthetic agent concentration

Abstract

An arrangement is provided for monitoring a metering of at least one medication administered to a patient. The concentration of the active ingredient of the medication, which is measured in the breathing gas of a patient, is balanced with a computed concentration in the breathing gas. When a change of the administered quantity of the medication takes place, the concentration range (13) is adapted. The concentration, which is measured in the breathing gas, must lie by computation within this range. An arrangement for administering at least one medication and a method for monitoring a metering or dosing of the medication as well as a method for treating a patient are provided.

Claims

1. An arrangement for monitoring a dosing of a medication administered to a patient, the arrangement comprising:

a device for measuring the concentration of said medication in the breathing gas of said patient;

an evaluation unit for detecting a deviation of the measured concentration of said medication from a pregiven concentration range;

a unit for providing information about the quantity of said medication delivered to said patient; and

,

a device for determining the pregiven concentration range based on quantity of medication delivered.

2. The arrangement of claim 1, further comprising a unit for intravenously administering said medication to the patient.

3. The arrangement of claim 1, further comprising a unit for communicating a deviation of the measured concentration from said concentration range.

4. The arrangement of claim 3, wherein said unit for communicating said deviation is an alarm unit for outputting an alarm.

5. The arrangement of claim 1, wherein the following are included in the monitoring of said dosing:

changes measured in an electroencephalogram;

bispectralindex-monitoring (BIS); and

, acoustically evoked potentials.

6. The arrangement of claim 1, further comprising a measuring unit for determining the depth of anesthesia of the patient;

and, said measuring unit being operatively connected to said evaluation unit.

7. The arrangement of claim 6, wherein said measuring unit processes EEG signals obtained from the patient.

8. The arrangement of claim 1, wherein said breathing gas flows in a breathing circuit having an inspiration branch;

and, said arrangement further comprises a medication absorber disposed in said inspiration branch.

9. An apparatus for administering a medication to a patient, the apparatus comprising:

a device for measuring the concentration of said medication in the breathing gas of said patient;

an evaluation unit for detecting a deviation of the measured concentration of said medication from a pregiven concentration range;

a unit for providing information about the quantity of said medication delivered to said patient; and

,

a device for determining the pregiven concentration range based on quantity of medication delivered.

10. A method for administering a medication to a patient, the method comprising the steps of:

measuring the concentration of said medication in the breathing gas of the patient;

detecting a deviation of the measured concentration of said medication from a pregiven concentration range;

detecting the quantity of said medication administered to the patient; and

,

redefining the pregiven concentration range based on the quantity of medication delivered.

11. The method of claim 10, comprising the further step of administering said medication to the patient intravenously.

12. The method of claim 10, comprising the further step of communicating said deviation from said concentration range to an operator.

13. The method of claim 12, comprising the further step of outputting an alarm when there is a deviation of the measured concentration out of said concentration range.